| 1 | /* $NetBSD: exec.h,v 1.21 2003/08/07 09:05:31 agc Exp $ */
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| 2 |
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| 3 | /*-
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| 4 | * Copyright (c) 1991, 1993
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| 5 | * The Regents of the University of California. All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to Berkeley by
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| 8 | * Kenneth Almquist.
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| 9 | *
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| 10 | * Redistribution and use in source and binary forms, with or without
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| 11 | * modification, are permitted provided that the following conditions
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| 12 | * are met:
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| 13 | * 1. Redistributions of source code must retain the above copyright
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| 14 | * notice, this list of conditions and the following disclaimer.
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright
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| 16 | * notice, this list of conditions and the following disclaimer in the
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| 17 | * documentation and/or other materials provided with the distribution.
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| 18 | * 3. Neither the name of the University nor the names of its contributors
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| 19 | * may be used to endorse or promote products derived from this software
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| 20 | * without specific prior written permission.
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| 21 | *
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| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 32 | * SUCH DAMAGE.
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| 33 | *
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| 34 | * @(#)exec.h 8.3 (Berkeley) 6/8/95
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| 35 | */
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| 36 |
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| 37 | #ifndef ___exec_h
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| 38 | #define ___exec_h
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| 39 |
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| 40 | /* values of cmdtype */
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| 41 | #define CMDUNKNOWN -1 /* no entry in table for command */
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| 42 | #define CMDNORMAL 0 /* command is an executable program */
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| 43 | #define CMDFUNCTION 1 /* command is a shell function */
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| 44 | #define CMDBUILTIN 2 /* command is a shell builtin */
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| 45 | #define CMDSPLBLTIN 3 /* command is a special shell builtin */
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| 46 |
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| 47 |
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| 48 | union param {
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| 49 | struct
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| 50 | {
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| 51 | int index;
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| 52 | int suffix; /* PC suffix index */
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| 53 | } n;
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| 54 | int (*bltin)(struct shinstance*, int, char**);
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| 55 | union node *func;
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| 56 | };
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| 57 |
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| 58 | struct cmdentry {
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| 59 | int cmdtype;
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| 60 | union param u;
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| 61 | };
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| 62 |
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| 63 |
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| 64 | /* action to find_command() */
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| 65 | #define DO_ERR 0x01 /* prints errors */
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| 66 | #define DO_ABS 0x02 /* checks absolute paths */
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| 67 | #define DO_NOFUNC 0x04 /* don't return shell functions, for command */
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| 68 | #define DO_ALTPATH 0x08 /* using alternate path */
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| 69 | #define DO_ALTBLTIN 0x20 /* %builtin in alt. path */
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| 70 |
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| 71 | /*extern const char *pathopt;*/ /* set by padvance */
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| 72 |
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| 73 | #if !defined(__GNUC__) && !defined(__attribute__)
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| 74 | # define __attribute__(a)
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| 75 | #endif
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| 76 |
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| 77 | #ifndef SH_FORKED_MODE
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| 78 | void subshellinitexec(shinstance *, shinstance *);
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| 79 | #endif
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| 80 | SH_NORETURN_1 void shellexec(struct shinstance *, char **, char **, const char *, int, int) SH_NORETURN_2;
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| 81 | char *padvance(struct shinstance *, const char **, const char *);
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| 82 | int hashcmd(struct shinstance *, int, char **);
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| 83 | void find_command(struct shinstance *, char *, struct cmdentry *, int, const char *);
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| 84 | int (*find_builtin(struct shinstance *, char *))(struct shinstance *, int, char **);
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| 85 | int (*find_splbltin(struct shinstance *, char *))(struct shinstance *, int, char **);
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| 86 | void hashcd(struct shinstance *);
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| 87 | void changepath(struct shinstance *, const char *);
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| 88 | void deletefuncs(struct shinstance *);
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| 89 | void getcmdentry(struct shinstance *, char *, struct cmdentry *);
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| 90 | void addcmdentry(struct shinstance *, char *, struct cmdentry *);
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| 91 | void defun(struct shinstance *, char *, union node *);
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| 92 | int unsetfunc(struct shinstance *, char *);
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| 93 | int typecmd(struct shinstance *, int, char **);
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| 94 | void hash_special_builtins(struct shinstance *);
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| 95 |
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| 96 | #endif
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